worker.h File Reference

This file describes the worker structure that holds a list of pending requests and handles them. More...

#include "libunbound/worker.h"
#include "util/netevent.h"
#include "util/locks.h"
#include "util/alloc.h"
#include "util/data/msgreply.h"
#include "util/data/msgparse.h"
#include "daemon/stats.h"
#include "util/module.h"
#include "dnstap/dnstap.h"

Data Structures
struct	worker
	Structure holding working information for unbound. More...

Enumerations
enum	worker_commands { worker_cmd_quit , worker_cmd_stats , worker_cmd_stats_noreset , worker_cmd_remote }
	worker commands More...

Functions
struct worker *	worker_create (struct daemon *daemon, int id, int *ports, int n)
	Create the worker structure. More...
int	worker_init (struct worker *worker, struct config_file *cfg, struct listen_port *ports, int do_sigs)
	Initialize worker. More...
void	worker_work (struct worker *worker)
	Make worker work.
void	worker_delete (struct worker *worker)
	Delete worker.
void	worker_send_cmd (struct worker *worker, enum worker_commands cmd)
	Send a command to a worker. More...
void	worker_stats_clear (struct worker *worker)
	Init worker stats - includes server_stats_init, outside network and mesh. More...

Detailed Description

This file describes the worker structure that holds a list of pending requests and handles them.

Enumeration Type Documentation

worker_commands

enum worker_commands

worker commands

Enumerator
worker_cmd_quit	make the worker quit
worker_cmd_stats	obtain statistics
worker_cmd_stats_noreset	obtain statistics without statsclear
worker_cmd_remote	execute remote control command

Function Documentation

worker_create()

struct worker* worker_create	(	struct daemon *	daemon,
		int	id,
		int *	ports,
		int	n
	)

Create the worker structure.

Bare bones version, zeroed struct, with backpointers only. Use worker_init on it later.

Parameters

daemon	the daemon that this worker thread is part of.
id	the thread number from 0.. numthreads-1.
ports	the ports it is allowed to use, array.
n	the number of ports.

Returns

: the new worker or NULL on alloc failure.

References worker::cmd, worker::daemon, log_err(), memdup(), worker::numports, worker::ports, daemon::rand, worker::rndstate, worker::thread_num, tube_create(), tube_delete(), and ub_initstate().

worker_init()

int worker_init	(	struct worker *	worker,
		struct config_file *	cfg,
		struct listen_port *	ports,
		int	do_sigs
	)

Initialize worker.

Allocates event base, listens to ports

Parameters

worker	worker to initialize, created with worker_create.
cfg	configuration settings.
ports	list of shared query ports.
do_sigs	if true, worker installs signal handlers.

Returns

: false on error.

References worker::base, and worker::need_to_exit.

Referenced by thread_start().

worker_send_cmd()

void worker_send_cmd	(	struct worker *	worker,
		enum worker_commands	cmd
	)

Send a command to a worker.

Uses blocking writes.

Parameters

worker	worker to send command to.
cmd	command to send.

References worker::cmd, log_err(), and tube_write_msg().

Referenced by daemon_stop_others(), distribute_cmd(), and server_stats_obtain().

worker_stats_clear()

void worker_stats_clear

(

struct worker *

worker

)

Init worker stats - includes server_stats_init, outside network and mesh.

Parameters

worker

the worker to init

References worker::back, module_env::cfg, worker::env, module_env::mesh, mesh_stats_clear(), outside_network::num_tcp_outgoing, outside_network::num_udp_outgoing, server_stats_init(), worker::stats, and outside_network::unwanted_replies.

Referenced by do_flush_stats().